Pertussis - number of reported cases in Sri Lanka
Sri Lanka: Pertussis - number of reported cases was 18 in 2025. ◆ Volatile
Pertussis - number of reported cases in Sri Lanka, 1974–2025
Source: World Health Organization, Global Health Observatory.
Analysis
The most recent figure for pertussis - number of reported cases in Sri Lanka is 18, measured in 2025.
The figure is down 64.7% on the previous year and down 83.2% over ten years.
Over the whole period, pertussis - number of reported cases in Sri Lanka peaked at 1,341 in 1975 and was at its lowest, 0, in 2005.
Sri Lanka ranks 101st of 210 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Pertussis - number of reported cases in Sri Lanka, year by year
| Year | Value | Change |
|---|---|---|
| 1974 | 525 | — |
| 1975 | 1,341 | +155.4% |
| 1976 | 1,040 | -22.4% |
| 1977 | 1,078 | +3.7% |
| 1978 | 703 | -34.8% |
| 1979 | 803 | +14.2% |
| 1980 | 542 | -32.5% |
| 1981 | 501 | -7.6% |
| 1982 | 296 | -40.9% |
| 1983 | 244 | -17.6% |
| 1984 | 274 | +12.3% |
| 1985 | 536 | +95.6% |
| 1986 | 157 | -70.7% |
| 1987 | 31 | -80.3% |
| 1988 | 25 | -19.4% |
| 1989 | 61 | +144.0% |
| 1990 | 271 | +344.3% |
| 1991 | 25 | -90.8% |
| 1992 | 6 | -76.0% |
| 1993 | 18 | +200.0% |
| 1994 | 5 | -72.2% |
| 1995 | 64 | +1180.0% |
| 1996 | 33 | -48.4% |
| 1997 | 229 | +593.9% |
| 1998 | 135 | -41.0% |
| 1999 | 112 | -17.0% |
| 2000 | 194 | +73.2% |
| 2001 | 52 | -73.2% |
| 2002 | 16 | -69.2% |
| 2003 | 82 | +412.5% |
| 2004 | 45 | -45.1% |
| 2005 | 0 | -100.0% |
| 2006 | 0 | — |
| 2007 | 0 | — |
| 2008 | 9 | — |
| 2009 | 31 | +244.4% |
| 2010 | 2 | -93.5% |
| 2011 | 23 | +1050.0% |
| 2012 | 61 | +165.2% |
| 2013 | 67 | +9.8% |
| 2014 | 38 | -43.3% |
| 2015 | 107 | +181.6% |
| 2016 | 54 | -49.5% |
| 2017 | 0 | -100.0% |
| 2018 | 12 | — |
| 2019 | 5 | -58.3% |
| 2020 | 1 | -80.0% |
| 2021 | 0 | -100.0% |
| 2022 | 0 | — |
| 2023 | 3 | — |
| 2024 | 51 | +1600.0% |
| 2025 | 18 | -64.7% |
Sri Lanka compared with similar countries
- Sri Lanka's 18 is above the median for upper middle income countries, which is 18, 1.0× the median. (57 countries reporting)
- Sri Lanka's 18 is above the median for South Asia, which is 15, 1.2× the median. (6 countries reporting)
Biggest year-on-year movements
Years where Pertussis - number of reported cases in Sri Lanka changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2024 | +1600.0% | 3 | 51 |
| 1995 | +1180.0% | 5 | 64 |
| 2011 | +1050.0% | 2 | 23 |
| 1997 | +593.9% | 33 | 229 |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 915 | 525 | 1,341 | 6 |
| 1980s | 266.7 | 25 | 542 | 10 |
| 1990s | 89.8 | 5 | 271 | 10 |
| 2000s | 42.9 | 0 | 194 | 10 |
| 2010s | 36.9 | 0 | 107 | 10 |
| 2020s | 12.17 | 0 | 51 | 6 |
Countries ranked near Sri Lanka
More health data for Sri Lanka
- Un projection of annual infant deaths, annual growth rate -1.62 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 0.7332 % change on previous year (2090)
- Estimated changes in temperature-related death rates compared to projected death rates 1,250 deaths per 1,000 people (2090)
- Number of infants who die before age 1 304 deaths (2100)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -2.13 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0339 units per person (2025)
- Population ages 00-04, male, annual growth rate -2.12 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0 units per US$ of GDP (2025)
Frequently asked questions
- What is pertussis - number of reported cases in Sri Lanka?
- Pertussis - number of reported cases in Sri Lanka was 18 in 2025, according to World Health Organization, Global Health Observatory.
- What is the highest pertussis - number of reported cases recorded in Sri Lanka?
- The highest recorded value was 1,341 in 1975.
- What is the lowest pertussis - number of reported cases recorded in Sri Lanka?
- The lowest recorded value was 0 in 2005.
- How does Sri Lanka rank for pertussis - number of reported cases?
- Sri Lanka ranks 101st out of 210 countries with data for 2025.
- Is pertussis - number of reported cases rising or falling in Sri Lanka?
- Over the last ten years it is down 83.2%. The long-run trend across the full record is volatile.
- Where does this Sri Lanka data come from?
- The figures come from World Health Organization, Global Health Observatory, published as part of Pertussis - number of reported cases. Statizoid updates them automatically from the source API.
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